Pineapple Chicken Sandwiches

Bahan-bahan (6 porsi)

• 3 chicken breasts (1½-2 pounds worth)
• 2 tablespoons soy sauce
• 2 tablespoons Tabasco sauce
• 3 tablespoons brown sugar
• 3 tablespoons dijon mustard
• 14 ounces canned pineapple rings (drained with juice reserved)
• 6 slices provolone cheese
• 6 hamburger buns
• mayonnaise or butter (for the buns)
• barbecue sauce (favorite store-bought or homemade)